Wavefront reconstruction and three-dimensional shape measurement by two-step dc-term-suppressed phase-shifted intensities.
Wavefront reconstruction and three-dimensional shape measurement by two-step dc-term-suppressed phase-shifted intensities.
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DOI：
10.1364/ol.34.001210
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发表时间：
2009-04
期刊：
影响因子：
3.6
通讯作者：
X. Meng;X. Peng;L. Cai;A. Li;J. P. Guo;Y. R. Wang
中科院分区：
文献类型：
--
作者：
X. Meng;X. Peng;L. Cai;A. Li;J. P. Guo;Y. R. Wang
提出了一种在（0，π）方向上任意相移的两步相移法波前重构和三维面形测量方法。在该方法中，仅需要两个相移强度，通过在空间域中的平均技术或在频域中的低通滤波器操作来去除直流项，并且不再需要其他额外的测量。对不规则波前的仿真表明了该方法的可行性，对正弦条纹投影系统的三维面罩的光学实验表明了该方法的有效性。
A wavefront reconstruction and three-dimensional (3-D) shape measurement method by a two-step phase-shifting algorithm with arbitrary phase shift in (0,pi) is proposed. In this method, only two phase-shifted intensities, with the removal of the dc term by an averaging technique in spatial domain or low-pass filter operation in the frequency domain, are needed, and the other additional measurements are no longer required. The simulation for an irregular wavefront has shown the feasibility, and the optical experiment for a 3-D face mask in the case of a sinusoidal fringe projection system has illustrated the validity of the proposed method.